Two-for-one twisting spindle



Sept. 4, 1962 A. OTTEN ETAL 3,052,030

TWO-FOR-ONE TWISTING SPINDLE Filed July 21, 1960 Anna 1' 9 a dc w'ee,

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ALFRED OTTEN PAUL EVERTZ HEINZ ROHNKE United States Patent Office 3,052,080 Patented Sept. 4., 1962 3,652,080 TWO-FOR-ONE TWETHNG SPHQDLE Alfred Often, Paul Evertz, and Heinz Rohnke, Monchen- Gladbach, Germany, assignors to K. Jos. Otten, Tucllfabrik, Monchen-Gladbach, Germany Filed July 21, 196i), Ser. No. 44,305 Claims priority, application Germany July 25, 1959 9 Claims. (Cl. 57-58.49)

The present invention relates to a two-for-one twisting spindle with stationary bobbin can and rotary delivery bell. Various types of such two-for-one twisting spindles are known. With this type of twisting spindles, the thread is withdrawn from a stationary bobbin, is then passed upwardly and is finally passed downwardly through the hollow spindle. Below the bobbin, the thread leaves the latter in radial direction and passes over the delivery bell provided with a belt groove.

It is further known to arrange the bobbin freely rotatable on the hollow spindle and to provide a drag blade rotatable about the bobbin.

All of these heretofore known embodiments have a rather complicated and expensive structure, and difiiculties are encountered in connection with the journalling of the rotating bobbin. Moreover, the employment of a drag blade represents a material additional expense.

It is, therefore, an object of the present invention to provide a two-for-one twisting spindle arrangement which will overcome the above-mentioned drawbacks.

It is another object of this invention to provide a twofor-one twisting spindle arrangement in which the journalling of the spindle will not require a ball bearing or the like.

It is a further object of this invention to provide a twofor-one twisting spindle arrangement of the above-mentioned type which will allow a considerable shortening of the thread guiding path.

Another object of this invention consists in the provision of a two-for-one twisting spindle arrangement which, While being extremely simple in construction, will also facilitate threading and reduce the time required therefor.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawing, in which:

FIGURE 1 is a vertical section through a two-for-one twisting spindle.

FIGURE 2 is a view of a shifter.

FIGURE 3 is a view of FIGURE 2 as seen in the direction of the arrow A of FIGURE 2.

FIGURE 4 is a fragmentary view looking in at the side of the bobbin brake.

The two-for-one twisting spindle with stationary bobbin box, rotating delivery bell and rotatably journalled vertical bobbin according to the present invention is characterized in that laterally on the bobbin box is approximately half the height of the bobbin, there is mounted a stationary thread guide, whereas below the spindle there is provided a yarn tube leading into a hollow spindle, said yarn being withdrawn from said last-mentioned hollow spindle in a manner known per se over the delivery bell to a winding-up device.

Referring to the drawing in detail, the two-for-one twisting spindle shown therein comprises a bobbin box 1 designed in the form of an open cage which is composed of individual bars so that the bobbin being unwound will be visible from the outside at any time, and that lint cannot collect in the cage, as is the case with the usual bobbin boxes. The bottom 2 of the bobbin box 1 has a central hub 3 which is journalled on a hollow spindle 4 of the delivery bell 5, which latter is provided with a belt groove 6. While the bell 5 driven in a well known manner rotates, the bobbin box 1 is prevented from rotation by permanent magnets.

Hub 3 of the bobbin box 1 is provided with a bearing stud 7 which engages a bearing bushing 8 in spindle 9. The bearing stud 7 is journalled in said bushing 8 by means of synthetic material as, for instance, polyarnide, so that lubrication will not be necessary. The top portion of the spindle has mounted thereon a pin 10 which extends through or engages a central eye of a tiltable hearing star 11 when the later is folded downwardly from the dot-dash position in FIGURE 1 into its solid position. The said star 11 may for instance be equipped with four cross-wise arranged arms.

The folded-up position of said star 11 is shown in dotdash lines of FIGURE 1.

The spindle 9 has a bottom disc 12 which serves as brake disc for a brake consisting of a weight-loaded lever 13. The spindle 9 receives bobbin 14 with its bobbin sleeve 15.

Laterally on bobbin box 1, approximately at half the height of the bobbin, there is mounted a stationary eyelet or thread guide 16. On the same side there is furthermore mounted below the bobbin a radially arranged, nearly horizontally located pipe 17 which passes through the bearing stud 7 into the hollow spindle 4. A thread passage 18 leads from the hollow spindle into the groove 6.

From bobbin 14, the the thread passes to the stationary thread guide 16 and from there downwardly into tube 17. In other words, the thread is not guided in an upward direction and has then again to pass in downward direction. Spindle 9, therefore, has no longitudinal bore. For this reason, it is also possible to employ the simple bearing of the spindle by means of sleeve bearings 7 and 8 and pin 10. The thread passes only through pipe 17 and the short hollow spindle 4, whereby the threading will be considerably facilitated.

Outside the bobbin box 1 there may be provided an anti-b allooning ring 19.

Due to the cage-like design of the bobbin box, it may happen, when a break in the thread is encountered, that torn fibers enter the adjacent spindle and thereby interfere with the spinning process. For this reason, the twofor-one twisting spindle according to the invention is combined with a shifter which, above all, is also necessary in order to assure that the twisted yarn will not burn on the oncoming cross windings, when during a break in the thread the same yarn layers will move on the friction rollers. Prior to the thread entering the withdrawing rollers, it acts upon a feeler 20 which is mounted on a tiltable shaft 21. Mounted on shaft 21 is a fork 22 which is adapted to act upon rod 23 of a shifter 24. Said shifter cooperates with a pawl 25 which, when in operation, engages a step of a collar 26 on the drive shaft 27.

As long as the thread maintains feeler 20 tilted outwardly, the drive is made effective through pawl 25. When the thread breaks, pawl 25 will be displaced axially with regard to shaft 27 so that pawl 25 will disengage collar 26 whereupon the drive will stop.

When changing bobbins, the entire spindle is removed from cage 1. This is extremely simple because it is merely necessary to swing the bearing star .11 upwardly. In other words, the bobbins are outside cage 1 mounted upon the spindle and are then together with the spindle inserted into cage 1. For facilitating the insertion of the bobbins into cage 1, there are provided guides in the form of bars 28 which are connected to the bottom 2 of the creel and diverge upwardly so that the bobbin automatically will be guided into its central position, and the sleeve 8 of the spindle 9 will rest on stud 7.

It may also be mentioned that the spindle 9 according to the present invention may be designed relatively thin. This is possible Without any drawbacks inasmuch as it hasno inner longitudinal bore. Consequently also, the bobbin sleeves will have a small diameter so that they can carry somewhat more material.

It is, of course, to be understood that the present invention is, by no means, limited to the particular construction shown in the drawing, but also comprises any modification within the scope of the appended claims.

What we claim is:

1. In a two-for-one twisting spindle system: a station arily arranged bobbin receiving container, 2. spindle rotatably journalled on a vertical axis in said container for receiving a bobbin, a rotatable twisting member arranged below said container coaxial with said spindle and having lateral thread guiding passage means, a stationary thread guide supported by said container on the inside for receiving a thread from a bobbin on said spindle, and stationary tubular thread guiding means extending axially in said twisting member and then radially in said container beneath said spindle, said tubular thread guiding means communicating at one end with said thread guiding passage means and at the other end being adapted for receiving a thread :from said thread guide and being operable for passing said thread to said thread guiding passage means to thereby cause said twisting member When rotating to twist said thread.

2. In 'a two-for-one twisting spindle system: a stationarily arranged bobbin receiving container, a vertical spindle rotatably journalled in said container vfor receiving a bobbin, a rotatable twisting member arranged below said container and having thread guiding passage means extending in a radial direction with regard to the axis of rotation of said twisting member, a stationary thread guide supported by said container on the inside for receiving a thread from a bobbin on said spindle, said thread guide being arranged at a level intermediate the upper and lower ends of said container, and stationarily mounted tubular thread guiding means extending axially into said twisting member and communicating at its lower end with said thread guiding passage means, said tubular thread guiding means having a radial portion in the container beneath said spindle terminating at its outer end in the vertical plane of said thread guide, said tubular thread guiding means being operable for passing a thread received from said thread guide to said thread guiding passage means to thereby cause said twisting member to twist said thread.

3. In a two-for-one twisting spindle system: a stationarily arranged bobbin receiving container, said container being provided with a bottom, a bearing stud mounted on said bottom at the central portion thereof, a vertical spindle rotatably supported at its lower end by said bearing stud, bearing means movably connected to the upper end of said container for detachably engaging the upper end of said spindle, a rotatable twist-ing member arranged below said container and having thread guiding passage means extending from the center thereof outwardly in a radial direction with regard to the axis of rotation of said twisting member, a stationary thread guide supported by said container on the inside from receiving a thread for a bobbin on said spindle, said thread guide being arranged at a level intermediate the upper and lower ends of said container, and a tubular thread guiding means stationarily mounted in said container extending axially into said twisting member and communicating at the lower end with said thread guiding passage means beneath the spindle terminating substantially vertically beneath said thread guide to receive the thread therefrom.

4. In a two-for-one twisting spindle system: a stationarily arranged bobbin receiving container, a vertical spindle rotatably journalled in said container for receiving a bobbin, brake disc means connected to the bottom of said spindle for rotation therewith, weight responsive brake means supported by said container having a brake element engaging said brake disc for braking said brake disc means and thereby said spindle, a rotatable twisting member arranged below said container and having radial thread guiding passage means, a stationary thread guide supported by said container on the inside for receiving a thread from a bobbin on said spindle, and tubular thread guiding means having an axial portion extending into said twisting member and terminating adjacent to and communicating with said thread guiding passage means, said tubular thread guiding means having a radial portion in the container beneath said spindle, said tubular thread guiding means being adapted for receiving a thread from said thread guide and passing said thread to said thread guiding passage means to thereby cause said twisting member when rotating to twist said thread.

5. A spindle system according to claim 1, in which said bobbin receiving container is an open cage.

6. In a two-for-one twisting spindle system: a stationarily arranged cage-like bobbin receiving container, said container being provided with a bottom, a bearing stud mounted on said bottom at the central portion thereof, a vertical spindle rotatably supported at its lower end by said bearing stud, bearing means movably connected to the upper end of said container for detachably engaging the upper end of said spindle, upwardly flaring resilient guiding means arranged along a circle coaxial with said spindle for guiding a bobbin being inserted into the container onto said spindle, a rotatable twisting member arranged below said container and having radial thread guiding passage means, a stationary thread guide supported by said container on the inside vfor receiving a thread from a bobbin on said spindle, and stationarily mounted tubular thread guiding means communicating at one end with said thread guiding passage means and at the other end with said thread guide (for receiving a thread from said thread guide and passing said thread to said thread guiding passage means to thereby cause said twisting member when rotating to twist said thread, said tubular thread guiding means comprising an L shaped member having one leg on the axis of said twisting member and the other leg in the vertical plane of said thread guide and beneath said spindle.

7. An arrangement according to claim l'in combination with a winding-up device and shifter means responsive to a break in the thread delivered by said twisting member for automatically stopping said Winding-up device.

8. An arrangement according to claim 2 in Which the twisting member has an upwardly curved flange of about the same diameter as the container over which the thread is drawn, a guide eye above the container on the axis 1 thereof to Which the thread passes, and a guide ring for passing a thread received :from said thread guide to said thread guiding passage means to thereby cause said tw st ng member to twist said thread, said tubular thread guiding means having a radial portion in the container at the top of the container over which the thread bends in passing to said guide eye.

9. An arrangement according to claim 8 in which there is an anti-ballooning ring surrounding the container and inside which the thread passes.

References Cited in the file of this patent UNITED STATES PATENTS 2,671,305 roan Mar. 9, 1954 2,890,564 Keith et al June 16, 1959 FOREIGN PATENTS 324,566 Great Britain Jan. 30, 1930 

